import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'


Vue.use(Router)

const router = new Router({
    routes: [
        { path: '/', redirect: '/login' },
        { path: '/login', component: Login },
        { path: '/home', component: Home }
    ]
})

//挂载路由导航守卫
router.beforeEach((to, from, next) => {
    //to 将要访问的路径
    //from 代表从哪个路径跳转而来
    //next 是一个函数, 表示放行
    if (to.path === '/login') return next()
        //获取token
    const toKenStr = window.sessionStorage.getItem('token')
    if (!toKenStr) {
        next('/login')
    } else {
        next()
    }

})

export default router